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ocfs2: fix several issues of append dio
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / qla_iocb.c
blobc49df34e9b351c350f13bfa2e8e98c4a1bf2a695
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2014 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8 #include "qla_target.h"
9
10 #include <linux/blkdev.h>
11 #include <linux/delay.h>
12
13 #include <scsi/scsi_tcq.h>
14
15 static void qla25xx_set_que(srb_t *, struct rsp_que **);
16 /**
17 * qla2x00_get_cmd_direction() - Determine control_flag data direction.
18 * @cmd: SCSI command
19 *
20 * Returns the proper CF_* direction based on CDB.
21 */
22 static inline uint16_t
23 qla2x00_get_cmd_direction(srb_t *sp)
24 {
25 uint16_t cflags;
26 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
27 struct scsi_qla_host *vha = sp->fcport->vha;
28
29 cflags = 0;
30
31 /* Set transfer direction */
32 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
33 cflags = CF_WRITE;
34 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
35 vha->qla_stats.output_requests++;
36 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
37 cflags = CF_READ;
38 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
39 vha->qla_stats.input_requests++;
40 }
41 return (cflags);
42 }
43
44 /**
45 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and
46 * Continuation Type 0 IOCBs to allocate.
47 *
48 * @dsds: number of data segment decriptors needed
49 *
50 * Returns the number of IOCB entries needed to store @dsds.
51 */
52 uint16_t
53 qla2x00_calc_iocbs_32(uint16_t dsds)
54 {
55 uint16_t iocbs;
56
57 iocbs = 1;
58 if (dsds > 3) {
59 iocbs += (dsds - 3) / 7;
60 if ((dsds - 3) % 7)
61 iocbs++;
62 }
63 return (iocbs);
64 }
65
66 /**
67 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and
68 * Continuation Type 1 IOCBs to allocate.
69 *
70 * @dsds: number of data segment decriptors needed
71 *
72 * Returns the number of IOCB entries needed to store @dsds.
73 */
74 uint16_t
75 qla2x00_calc_iocbs_64(uint16_t dsds)
76 {
77 uint16_t iocbs;
78
79 iocbs = 1;
80 if (dsds > 2) {
81 iocbs += (dsds - 2) / 5;
82 if ((dsds - 2) % 5)
83 iocbs++;
84 }
85 return (iocbs);
86 }
87
88 /**
89 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB.
90 * @ha: HA context
91 *
92 * Returns a pointer to the Continuation Type 0 IOCB packet.
93 */
94 static inline cont_entry_t *
95 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha)
96 {
97 cont_entry_t *cont_pkt;
98 struct req_que *req = vha->req;
99 /* Adjust ring index. */
100 req->ring_index++;
101 if (req->ring_index == req->length) {
102 req->ring_index = 0;
103 req->ring_ptr = req->ring;
104 } else {
105 req->ring_ptr++;
106 }
107
108 cont_pkt = (cont_entry_t *)req->ring_ptr;
109
110 /* Load packet defaults. */
111 *((uint32_t *)(&cont_pkt->entry_type)) = cpu_to_le32(CONTINUE_TYPE);
112
113 return (cont_pkt);
114 }
115
116 /**
117 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
118 * @ha: HA context
119 *
120 * Returns a pointer to the continuation type 1 IOCB packet.
121 */
122 static inline cont_a64_entry_t *
123 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req)
124 {
125 cont_a64_entry_t *cont_pkt;
126
127 /* Adjust ring index. */
128 req->ring_index++;
129 if (req->ring_index == req->length) {
130 req->ring_index = 0;
131 req->ring_ptr = req->ring;
132 } else {
133 req->ring_ptr++;
134 }
135
136 cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
137
138 /* Load packet defaults. */
139 *((uint32_t *)(&cont_pkt->entry_type)) = IS_QLAFX00(vha->hw) ?
140 cpu_to_le32(CONTINUE_A64_TYPE_FX00) :
141 cpu_to_le32(CONTINUE_A64_TYPE);
142
143 return (cont_pkt);
144 }
145
146 static inline int
147 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts)
148 {
149 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
150 uint8_t guard = scsi_host_get_guard(cmd->device->host);
151
152 /* We always use DIFF Bundling for best performance */
153 *fw_prot_opts = 0;
154
155 /* Translate SCSI opcode to a protection opcode */
156 switch (scsi_get_prot_op(cmd)) {
157 case SCSI_PROT_READ_STRIP:
158 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
159 break;
160 case SCSI_PROT_WRITE_INSERT:
161 *fw_prot_opts |= PO_MODE_DIF_INSERT;
162 break;
163 case SCSI_PROT_READ_INSERT:
164 *fw_prot_opts |= PO_MODE_DIF_INSERT;
165 break;
166 case SCSI_PROT_WRITE_STRIP:
167 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
168 break;
169 case SCSI_PROT_READ_PASS:
170 case SCSI_PROT_WRITE_PASS:
171 if (guard & SHOST_DIX_GUARD_IP)
172 *fw_prot_opts |= PO_MODE_DIF_TCP_CKSUM;
173 else
174 *fw_prot_opts |= PO_MODE_DIF_PASS;
175 break;
176 default: /* Normal Request */
177 *fw_prot_opts |= PO_MODE_DIF_PASS;
178 break;
179 }
180
181 return scsi_prot_sg_count(cmd);
182 }
183
184 /*
185 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit
186 * capable IOCB types.
187 *
188 * @sp: SRB command to process
189 * @cmd_pkt: Command type 2 IOCB
190 * @tot_dsds: Total number of segments to transfer
191 */
192 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt,
193 uint16_t tot_dsds)
194 {
195 uint16_t avail_dsds;
196 uint32_t *cur_dsd;
197 scsi_qla_host_t *vha;
198 struct scsi_cmnd *cmd;
199 struct scatterlist *sg;
200 int i;
201
202 cmd = GET_CMD_SP(sp);
203
204 /* Update entry type to indicate Command Type 2 IOCB */
205 *((uint32_t *)(&cmd_pkt->entry_type)) =
206 cpu_to_le32(COMMAND_TYPE);
207
208 /* No data transfer */
209 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
210 cmd_pkt->byte_count = cpu_to_le32(0);
211 return;
212 }
213
214 vha = sp->fcport->vha;
215 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
216
217 /* Three DSDs are available in the Command Type 2 IOCB */
218 avail_dsds = 3;
219 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
220
221 /* Load data segments */
222 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
223 cont_entry_t *cont_pkt;
224
225 /* Allocate additional continuation packets? */
226 if (avail_dsds == 0) {
227 /*
228 * Seven DSDs are available in the Continuation
229 * Type 0 IOCB.
230 */
231 cont_pkt = qla2x00_prep_cont_type0_iocb(vha);
232 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address;
233 avail_dsds = 7;
234 }
235
236 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg));
237 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
238 avail_dsds--;
239 }
240 }
241
242 /**
243 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit
244 * capable IOCB types.
245 *
246 * @sp: SRB command to process
247 * @cmd_pkt: Command type 3 IOCB
248 * @tot_dsds: Total number of segments to transfer
249 */
250 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt,
251 uint16_t tot_dsds)
252 {
253 uint16_t avail_dsds;
254 uint32_t *cur_dsd;
255 scsi_qla_host_t *vha;
256 struct scsi_cmnd *cmd;
257 struct scatterlist *sg;
258 int i;
259
260 cmd = GET_CMD_SP(sp);
261
262 /* Update entry type to indicate Command Type 3 IOCB */
263 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_A64_TYPE);
264
265 /* No data transfer */
266 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
267 cmd_pkt->byte_count = cpu_to_le32(0);
268 return;
269 }
270
271 vha = sp->fcport->vha;
272 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
273
274 /* Two DSDs are available in the Command Type 3 IOCB */
275 avail_dsds = 2;
276 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
277
278 /* Load data segments */
279 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
280 dma_addr_t sle_dma;
281 cont_a64_entry_t *cont_pkt;
282
283 /* Allocate additional continuation packets? */
284 if (avail_dsds == 0) {
285 /*
286 * Five DSDs are available in the Continuation
287 * Type 1 IOCB.
288 */
289 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
290 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
291 avail_dsds = 5;
292 }
293
294 sle_dma = sg_dma_address(sg);
295 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
296 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
297 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
298 avail_dsds--;
299 }
300 }
301
302 /**
303 * qla2x00_start_scsi() - Send a SCSI command to the ISP
304 * @sp: command to send to the ISP
305 *
306 * Returns non-zero if a failure occurred, else zero.
307 */
308 int
309 qla2x00_start_scsi(srb_t *sp)
310 {
311 int nseg;
312 unsigned long flags;
313 scsi_qla_host_t *vha;
314 struct scsi_cmnd *cmd;
315 uint32_t *clr_ptr;
316 uint32_t index;
317 uint32_t handle;
318 cmd_entry_t *cmd_pkt;
319 uint16_t cnt;
320 uint16_t req_cnt;
321 uint16_t tot_dsds;
322 struct device_reg_2xxx __iomem *reg;
323 struct qla_hw_data *ha;
324 struct req_que *req;
325 struct rsp_que *rsp;
326
327 /* Setup device pointers. */
328 vha = sp->fcport->vha;
329 ha = vha->hw;
330 reg = &ha->iobase->isp;
331 cmd = GET_CMD_SP(sp);
332 req = ha->req_q_map[0];
333 rsp = ha->rsp_q_map[0];
334 /* So we know we haven't pci_map'ed anything yet */
335 tot_dsds = 0;
336
337 /* Send marker if required */
338 if (vha->marker_needed != 0) {
339 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
340 QLA_SUCCESS) {
341 return (QLA_FUNCTION_FAILED);
342 }
343 vha->marker_needed = 0;
344 }
345
346 /* Acquire ring specific lock */
347 spin_lock_irqsave(&ha->hardware_lock, flags);
348
349 /* Check for room in outstanding command list. */
350 handle = req->current_outstanding_cmd;
351 for (index = 1; index < req->num_outstanding_cmds; index++) {
352 handle++;
353 if (handle == req->num_outstanding_cmds)
354 handle = 1;
355 if (!req->outstanding_cmds[handle])
356 break;
357 }
358 if (index == req->num_outstanding_cmds)
359 goto queuing_error;
360
361 /* Map the sg table so we have an accurate count of sg entries needed */
362 if (scsi_sg_count(cmd)) {
363 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
364 scsi_sg_count(cmd), cmd->sc_data_direction);
365 if (unlikely(!nseg))
366 goto queuing_error;
367 } else
368 nseg = 0;
369
370 tot_dsds = nseg;
371
372 /* Calculate the number of request entries needed. */
373 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds);
374 if (req->cnt < (req_cnt + 2)) {
375 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg));
376 if (req->ring_index < cnt)
377 req->cnt = cnt - req->ring_index;
378 else
379 req->cnt = req->length -
380 (req->ring_index - cnt);
381 /* If still no head room then bail out */
382 if (req->cnt < (req_cnt + 2))
383 goto queuing_error;
384 }
385
386 /* Build command packet */
387 req->current_outstanding_cmd = handle;
388 req->outstanding_cmds[handle] = sp;
389 sp->handle = handle;
390 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
391 req->cnt -= req_cnt;
392
393 cmd_pkt = (cmd_entry_t *)req->ring_ptr;
394 cmd_pkt->handle = handle;
395 /* Zero out remaining portion of packet. */
396 clr_ptr = (uint32_t *)cmd_pkt + 2;
397 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
398 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
399
400 /* Set target ID and LUN number*/
401 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id);
402 cmd_pkt->lun = cpu_to_le16(cmd->device->lun);
403 cmd_pkt->control_flags = cpu_to_le16(CF_SIMPLE_TAG);
404
405 /* Load SCSI command packet. */
406 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len);
407 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
408
409 /* Build IOCB segments */
410 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds);
411
412 /* Set total data segment count. */
413 cmd_pkt->entry_count = (uint8_t)req_cnt;
414 wmb();
415
416 /* Adjust ring index. */
417 req->ring_index++;
418 if (req->ring_index == req->length) {
419 req->ring_index = 0;
420 req->ring_ptr = req->ring;
421 } else
422 req->ring_ptr++;
423
424 sp->flags |= SRB_DMA_VALID;
425
426 /* Set chip new ring index. */
427 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index);
428 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */
429
430 /* Manage unprocessed RIO/ZIO commands in response queue. */
431 if (vha->flags.process_response_queue &&
432 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
433 qla2x00_process_response_queue(rsp);
434
435 spin_unlock_irqrestore(&ha->hardware_lock, flags);
436 return (QLA_SUCCESS);
437
438 queuing_error:
439 if (tot_dsds)
440 scsi_dma_unmap(cmd);
441
442 spin_unlock_irqrestore(&ha->hardware_lock, flags);
443
444 return (QLA_FUNCTION_FAILED);
445 }
446
447 /**
448 * qla2x00_start_iocbs() - Execute the IOCB command
449 */
450 void
451 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req)
452 {
453 struct qla_hw_data *ha = vha->hw;
454 device_reg_t *reg = ISP_QUE_REG(ha, req->id);
455
456 if (IS_P3P_TYPE(ha)) {
457 qla82xx_start_iocbs(vha);
458 } else {
459 /* Adjust ring index. */
460 req->ring_index++;
461 if (req->ring_index == req->length) {
462 req->ring_index = 0;
463 req->ring_ptr = req->ring;
464 } else
465 req->ring_ptr++;
466
467 /* Set chip new ring index. */
468 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
469 WRT_REG_DWORD(req->req_q_in, req->ring_index);
470 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
471 } else if (IS_QLAFX00(ha)) {
472 WRT_REG_DWORD(&reg->ispfx00.req_q_in, req->ring_index);
473 RD_REG_DWORD_RELAXED(&reg->ispfx00.req_q_in);
474 QLAFX00_SET_HST_INTR(ha, ha->rqstq_intr_code);
475 } else if (IS_FWI2_CAPABLE(ha)) {
476 WRT_REG_DWORD(&reg->isp24.req_q_in, req->ring_index);
477 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
478 } else {
479 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp),
480 req->ring_index);
481 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
482 }
483 }
484 }
485
486 /**
487 * qla2x00_marker() - Send a marker IOCB to the firmware.
488 * @ha: HA context
489 * @loop_id: loop ID
490 * @lun: LUN
491 * @type: marker modifier
492 *
493 * Can be called from both normal and interrupt context.
494 *
495 * Returns non-zero if a failure occurred, else zero.
496 */
497 static int
498 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
499 struct rsp_que *rsp, uint16_t loop_id,
500 uint64_t lun, uint8_t type)
501 {
502 mrk_entry_t *mrk;
503 struct mrk_entry_24xx *mrk24 = NULL;
504
505 struct qla_hw_data *ha = vha->hw;
506 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
507
508 req = ha->req_q_map[0];
509 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, NULL);
510 if (mrk == NULL) {
511 ql_log(ql_log_warn, base_vha, 0x3026,
512 "Failed to allocate Marker IOCB.\n");
513
514 return (QLA_FUNCTION_FAILED);
515 }
516
517 mrk->entry_type = MARKER_TYPE;
518 mrk->modifier = type;
519 if (type != MK_SYNC_ALL) {
520 if (IS_FWI2_CAPABLE(ha)) {
521 mrk24 = (struct mrk_entry_24xx *) mrk;
522 mrk24->nport_handle = cpu_to_le16(loop_id);
523 int_to_scsilun(lun, (struct scsi_lun *)&mrk24->lun);
524 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
525 mrk24->vp_index = vha->vp_idx;
526 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle);
527 } else {
528 SET_TARGET_ID(ha, mrk->target, loop_id);
529 mrk->lun = cpu_to_le16((uint16_t)lun);
530 }
531 }
532 wmb();
533
534 qla2x00_start_iocbs(vha, req);
535
536 return (QLA_SUCCESS);
537 }
538
539 int
540 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
541 struct rsp_que *rsp, uint16_t loop_id, uint64_t lun,
542 uint8_t type)
543 {
544 int ret;
545 unsigned long flags = 0;
546
547 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
548 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type);
549 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
550
551 return (ret);
552 }
553
554 /*
555 * qla2x00_issue_marker
556 *
557 * Issue marker
558 * Caller CAN have hardware lock held as specified by ha_locked parameter.
559 * Might release it, then reaquire.
560 */
561 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
562 {
563 if (ha_locked) {
564 if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
565 MK_SYNC_ALL) != QLA_SUCCESS)
566 return QLA_FUNCTION_FAILED;
567 } else {
568 if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
569 MK_SYNC_ALL) != QLA_SUCCESS)
570 return QLA_FUNCTION_FAILED;
571 }
572 vha->marker_needed = 0;
573
574 return QLA_SUCCESS;
575 }
576
577 static inline int
578 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
579 uint16_t tot_dsds)
580 {
581 uint32_t *cur_dsd = NULL;
582 scsi_qla_host_t *vha;
583 struct qla_hw_data *ha;
584 struct scsi_cmnd *cmd;
585 struct scatterlist *cur_seg;
586 uint32_t *dsd_seg;
587 void *next_dsd;
588 uint8_t avail_dsds;
589 uint8_t first_iocb = 1;
590 uint32_t dsd_list_len;
591 struct dsd_dma *dsd_ptr;
592 struct ct6_dsd *ctx;
593
594 cmd = GET_CMD_SP(sp);
595
596 /* Update entry type to indicate Command Type 3 IOCB */
597 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_6);
598
599 /* No data transfer */
600 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
601 cmd_pkt->byte_count = cpu_to_le32(0);
602 return 0;
603 }
604
605 vha = sp->fcport->vha;
606 ha = vha->hw;
607
608 /* Set transfer direction */
609 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
610 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
611 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
612 vha->qla_stats.output_requests++;
613 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
614 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
615 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
616 vha->qla_stats.input_requests++;
617 }
618
619 cur_seg = scsi_sglist(cmd);
620 ctx = GET_CMD_CTX_SP(sp);
621
622 while (tot_dsds) {
623 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ?
624 QLA_DSDS_PER_IOCB : tot_dsds;
625 tot_dsds -= avail_dsds;
626 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE;
627
628 dsd_ptr = list_first_entry(&ha->gbl_dsd_list,
629 struct dsd_dma, list);
630 next_dsd = dsd_ptr->dsd_addr;
631 list_del(&dsd_ptr->list);
632 ha->gbl_dsd_avail--;
633 list_add_tail(&dsd_ptr->list, &ctx->dsd_list);
634 ctx->dsd_use_cnt++;
635 ha->gbl_dsd_inuse++;
636
637 if (first_iocb) {
638 first_iocb = 0;
639 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
640 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
641 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
642 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len);
643 } else {
644 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
645 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
646 *cur_dsd++ = cpu_to_le32(dsd_list_len);
647 }
648 cur_dsd = (uint32_t *)next_dsd;
649 while (avail_dsds) {
650 dma_addr_t sle_dma;
651
652 sle_dma = sg_dma_address(cur_seg);
653 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
654 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
655 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
656 cur_seg = sg_next(cur_seg);
657 avail_dsds--;
658 }
659 }
660
661 /* Null termination */
662 *cur_dsd++ = 0;
663 *cur_dsd++ = 0;
664 *cur_dsd++ = 0;
665 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE;
666 return 0;
667 }
668
669 /*
670 * qla24xx_calc_dsd_lists() - Determine number of DSD list required
671 * for Command Type 6.
672 *
673 * @dsds: number of data segment decriptors needed
674 *
675 * Returns the number of dsd list needed to store @dsds.
676 */
677 static inline uint16_t
678 qla24xx_calc_dsd_lists(uint16_t dsds)
679 {
680 uint16_t dsd_lists = 0;
681
682 dsd_lists = (dsds/QLA_DSDS_PER_IOCB);
683 if (dsds % QLA_DSDS_PER_IOCB)
684 dsd_lists++;
685 return dsd_lists;
686 }
687
688
689 /**
690 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
691 * IOCB types.
692 *
693 * @sp: SRB command to process
694 * @cmd_pkt: Command type 3 IOCB
695 * @tot_dsds: Total number of segments to transfer
696 */
697 static inline void
698 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
699 uint16_t tot_dsds)
700 {
701 uint16_t avail_dsds;
702 uint32_t *cur_dsd;
703 scsi_qla_host_t *vha;
704 struct scsi_cmnd *cmd;
705 struct scatterlist *sg;
706 int i;
707
708 cmd = GET_CMD_SP(sp);
709
710 /* Update entry type to indicate Command Type 3 IOCB */
711 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_7);
712
713 /* No data transfer */
714 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
715 cmd_pkt->byte_count = cpu_to_le32(0);
716 return;
717 }
718
719 vha = sp->fcport->vha;
720
721 /* Set transfer direction */
722 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
723 cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_WRITE_DATA);
724 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
725 vha->qla_stats.output_requests++;
726 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
727 cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_READ_DATA);
728 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
729 vha->qla_stats.input_requests++;
730 }
731
732 /* One DSD is available in the Command Type 3 IOCB */
733 avail_dsds = 1;
734 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
735
736 /* Load data segments */
737
738 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
739 dma_addr_t sle_dma;
740 cont_a64_entry_t *cont_pkt;
741
742 /* Allocate additional continuation packets? */
743 if (avail_dsds == 0) {
744 /*
745 * Five DSDs are available in the Continuation
746 * Type 1 IOCB.
747 */
748 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
749 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
750 avail_dsds = 5;
751 }
752
753 sle_dma = sg_dma_address(sg);
754 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
755 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
756 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
757 avail_dsds--;
758 }
759 }
760
761 struct fw_dif_context {
762 uint32_t ref_tag;
763 uint16_t app_tag;
764 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/
765 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/
766 };
767
768 /*
769 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
770 *
771 */
772 static inline void
773 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt,
774 unsigned int protcnt)
775 {
776 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
777
778 switch (scsi_get_prot_type(cmd)) {
779 case SCSI_PROT_DIF_TYPE0:
780 /*
781 * No check for ql2xenablehba_err_chk, as it would be an
782 * I/O error if hba tag generation is not done.
783 */
784 pkt->ref_tag = cpu_to_le32((uint32_t)
785 (0xffffffff & scsi_get_lba(cmd)));
786
787 if (!qla2x00_hba_err_chk_enabled(sp))
788 break;
789
790 pkt->ref_tag_mask[0] = 0xff;
791 pkt->ref_tag_mask[1] = 0xff;
792 pkt->ref_tag_mask[2] = 0xff;
793 pkt->ref_tag_mask[3] = 0xff;
794 break;
795
796 /*
797 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
798 * match LBA in CDB + N
799 */
800 case SCSI_PROT_DIF_TYPE2:
801 pkt->app_tag = cpu_to_le16(0);
802 pkt->app_tag_mask[0] = 0x0;
803 pkt->app_tag_mask[1] = 0x0;
804
805 pkt->ref_tag = cpu_to_le32((uint32_t)
806 (0xffffffff & scsi_get_lba(cmd)));
807
808 if (!qla2x00_hba_err_chk_enabled(sp))
809 break;
810
811 /* enable ALL bytes of the ref tag */
812 pkt->ref_tag_mask[0] = 0xff;
813 pkt->ref_tag_mask[1] = 0xff;
814 pkt->ref_tag_mask[2] = 0xff;
815 pkt->ref_tag_mask[3] = 0xff;
816 break;
817
818 /* For Type 3 protection: 16 bit GUARD only */
819 case SCSI_PROT_DIF_TYPE3:
820 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] =
821 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] =
822 0x00;
823 break;
824
825 /*
826 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
827 * 16 bit app tag.
828 */
829 case SCSI_PROT_DIF_TYPE1:
830 pkt->ref_tag = cpu_to_le32((uint32_t)
831 (0xffffffff & scsi_get_lba(cmd)));
832 pkt->app_tag = cpu_to_le16(0);
833 pkt->app_tag_mask[0] = 0x0;
834 pkt->app_tag_mask[1] = 0x0;
835
836 if (!qla2x00_hba_err_chk_enabled(sp))
837 break;
838
839 /* enable ALL bytes of the ref tag */
840 pkt->ref_tag_mask[0] = 0xff;
841 pkt->ref_tag_mask[1] = 0xff;
842 pkt->ref_tag_mask[2] = 0xff;
843 pkt->ref_tag_mask[3] = 0xff;
844 break;
845 }
846 }
847
848 struct qla2_sgx {
849 dma_addr_t dma_addr; /* OUT */
850 uint32_t dma_len; /* OUT */
851
852 uint32_t tot_bytes; /* IN */
853 struct scatterlist *cur_sg; /* IN */
854
855 /* for book keeping, bzero on initial invocation */
856 uint32_t bytes_consumed;
857 uint32_t num_bytes;
858 uint32_t tot_partial;
859
860 /* for debugging */
861 uint32_t num_sg;
862 srb_t *sp;
863 };
864
865 static int
866 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx,
867 uint32_t *partial)
868 {
869 struct scatterlist *sg;
870 uint32_t cumulative_partial, sg_len;
871 dma_addr_t sg_dma_addr;
872
873 if (sgx->num_bytes == sgx->tot_bytes)
874 return 0;
875
876 sg = sgx->cur_sg;
877 cumulative_partial = sgx->tot_partial;
878
879 sg_dma_addr = sg_dma_address(sg);
880 sg_len = sg_dma_len(sg);
881
882 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed;
883
884 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) {
885 sgx->dma_len = (blk_sz - cumulative_partial);
886 sgx->tot_partial = 0;
887 sgx->num_bytes += blk_sz;
888 *partial = 0;
889 } else {
890 sgx->dma_len = sg_len - sgx->bytes_consumed;
891 sgx->tot_partial += sgx->dma_len;
892 *partial = 1;
893 }
894
895 sgx->bytes_consumed += sgx->dma_len;
896
897 if (sg_len == sgx->bytes_consumed) {
898 sg = sg_next(sg);
899 sgx->num_sg++;
900 sgx->cur_sg = sg;
901 sgx->bytes_consumed = 0;
902 }
903
904 return 1;
905 }
906
907 int
908 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
909 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
910 {
911 void *next_dsd;
912 uint8_t avail_dsds = 0;
913 uint32_t dsd_list_len;
914 struct dsd_dma *dsd_ptr;
915 struct scatterlist *sg_prot;
916 uint32_t *cur_dsd = dsd;
917 uint16_t used_dsds = tot_dsds;
918
919 uint32_t prot_int; /* protection interval */
920 uint32_t partial;
921 struct qla2_sgx sgx;
922 dma_addr_t sle_dma;
923 uint32_t sle_dma_len, tot_prot_dma_len = 0;
924 struct scsi_cmnd *cmd;
925
926 memset(&sgx, 0, sizeof(struct qla2_sgx));
927 if (sp) {
928 cmd = GET_CMD_SP(sp);
929 prot_int = cmd->device->sector_size;
930
931 sgx.tot_bytes = scsi_bufflen(cmd);
932 sgx.cur_sg = scsi_sglist(cmd);
933 sgx.sp = sp;
934
935 sg_prot = scsi_prot_sglist(cmd);
936 } else if (tc) {
937 prot_int = tc->blk_sz;
938 sgx.tot_bytes = tc->bufflen;
939 sgx.cur_sg = tc->sg;
940 sg_prot = tc->prot_sg;
941 } else {
942 BUG();
943 return 1;
944 }
945
946 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) {
947
948 sle_dma = sgx.dma_addr;
949 sle_dma_len = sgx.dma_len;
950 alloc_and_fill:
951 /* Allocate additional continuation packets? */
952 if (avail_dsds == 0) {
953 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
954 QLA_DSDS_PER_IOCB : used_dsds;
955 dsd_list_len = (avail_dsds + 1) * 12;
956 used_dsds -= avail_dsds;
957
958 /* allocate tracking DS */
959 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
960 if (!dsd_ptr)
961 return 1;
962
963 /* allocate new list */
964 dsd_ptr->dsd_addr = next_dsd =
965 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
966 &dsd_ptr->dsd_list_dma);
967
968 if (!next_dsd) {
969 /*
970 * Need to cleanup only this dsd_ptr, rest
971 * will be done by sp_free_dma()
972 */
973 kfree(dsd_ptr);
974 return 1;
975 }
976
977 if (sp) {
978 list_add_tail(&dsd_ptr->list,
979 &((struct crc_context *)
980 sp->u.scmd.ctx)->dsd_list);
981
982 sp->flags |= SRB_CRC_CTX_DSD_VALID;
983 } else {
984 list_add_tail(&dsd_ptr->list,
985 &(tc->ctx->dsd_list));
986 tc->ctx_dsd_alloced = 1;
987 }
988
989
990 /* add new list to cmd iocb or last list */
991 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
992 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
993 *cur_dsd++ = dsd_list_len;
994 cur_dsd = (uint32_t *)next_dsd;
995 }
996 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
997 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
998 *cur_dsd++ = cpu_to_le32(sle_dma_len);
999 avail_dsds--;
1000
1001 if (partial == 0) {
1002 /* Got a full protection interval */
1003 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len;
1004 sle_dma_len = 8;
1005
1006 tot_prot_dma_len += sle_dma_len;
1007 if (tot_prot_dma_len == sg_dma_len(sg_prot)) {
1008 tot_prot_dma_len = 0;
1009 sg_prot = sg_next(sg_prot);
1010 }
1011
1012 partial = 1; /* So as to not re-enter this block */
1013 goto alloc_and_fill;
1014 }
1015 }
1016 /* Null termination */
1017 *cur_dsd++ = 0;
1018 *cur_dsd++ = 0;
1019 *cur_dsd++ = 0;
1020 return 0;
1021 }
1022
1023 int
1024 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
1025 uint16_t tot_dsds, struct qla_tgt_cmd *tc)
1026 {
1027 void *next_dsd;
1028 uint8_t avail_dsds = 0;
1029 uint32_t dsd_list_len;
1030 struct dsd_dma *dsd_ptr;
1031 struct scatterlist *sg, *sgl;
1032 uint32_t *cur_dsd = dsd;
1033 int i;
1034 uint16_t used_dsds = tot_dsds;
1035 struct scsi_cmnd *cmd;
1036
1037 if (sp) {
1038 cmd = GET_CMD_SP(sp);
1039 sgl = scsi_sglist(cmd);
1040 } else if (tc) {
1041 sgl = tc->sg;
1042 } else {
1043 BUG();
1044 return 1;
1045 }
1046
1047
1048 for_each_sg(sgl, sg, tot_dsds, i) {
1049 dma_addr_t sle_dma;
1050
1051 /* Allocate additional continuation packets? */
1052 if (avail_dsds == 0) {
1053 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1054 QLA_DSDS_PER_IOCB : used_dsds;
1055 dsd_list_len = (avail_dsds + 1) * 12;
1056 used_dsds -= avail_dsds;
1057
1058 /* allocate tracking DS */
1059 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1060 if (!dsd_ptr)
1061 return 1;
1062
1063 /* allocate new list */
1064 dsd_ptr->dsd_addr = next_dsd =
1065 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1066 &dsd_ptr->dsd_list_dma);
1067
1068 if (!next_dsd) {
1069 /*
1070 * Need to cleanup only this dsd_ptr, rest
1071 * will be done by sp_free_dma()
1072 */
1073 kfree(dsd_ptr);
1074 return 1;
1075 }
1076
1077 if (sp) {
1078 list_add_tail(&dsd_ptr->list,
1079 &((struct crc_context *)
1080 sp->u.scmd.ctx)->dsd_list);
1081
1082 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1083 } else {
1084 list_add_tail(&dsd_ptr->list,
1085 &(tc->ctx->dsd_list));
1086 tc->ctx_dsd_alloced = 1;
1087 }
1088
1089 /* add new list to cmd iocb or last list */
1090 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1091 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1092 *cur_dsd++ = dsd_list_len;
1093 cur_dsd = (uint32_t *)next_dsd;
1094 }
1095 sle_dma = sg_dma_address(sg);
1096
1097 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1098 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1099 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1100 avail_dsds--;
1101
1102 }
1103 /* Null termination */
1104 *cur_dsd++ = 0;
1105 *cur_dsd++ = 0;
1106 *cur_dsd++ = 0;
1107 return 0;
1108 }
1109
1110 int
1111 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
1112 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
1113 {
1114 void *next_dsd;
1115 uint8_t avail_dsds = 0;
1116 uint32_t dsd_list_len;
1117 struct dsd_dma *dsd_ptr;
1118 struct scatterlist *sg, *sgl;
1119 int i;
1120 struct scsi_cmnd *cmd;
1121 uint32_t *cur_dsd = dsd;
1122 uint16_t used_dsds = tot_dsds;
1123 struct scsi_qla_host *vha;
1124
1125 if (sp) {
1126 cmd = GET_CMD_SP(sp);
1127 sgl = scsi_prot_sglist(cmd);
1128 vha = sp->fcport->vha;
1129 } else if (tc) {
1130 vha = tc->vha;
1131 sgl = tc->prot_sg;
1132 } else {
1133 BUG();
1134 return 1;
1135 }
1136
1137 ql_dbg(ql_dbg_tgt, vha, 0xe021,
1138 "%s: enter\n", __func__);
1139
1140 for_each_sg(sgl, sg, tot_dsds, i) {
1141 dma_addr_t sle_dma;
1142
1143 /* Allocate additional continuation packets? */
1144 if (avail_dsds == 0) {
1145 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1146 QLA_DSDS_PER_IOCB : used_dsds;
1147 dsd_list_len = (avail_dsds + 1) * 12;
1148 used_dsds -= avail_dsds;
1149
1150 /* allocate tracking DS */
1151 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1152 if (!dsd_ptr)
1153 return 1;
1154
1155 /* allocate new list */
1156 dsd_ptr->dsd_addr = next_dsd =
1157 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1158 &dsd_ptr->dsd_list_dma);
1159
1160 if (!next_dsd) {
1161 /*
1162 * Need to cleanup only this dsd_ptr, rest
1163 * will be done by sp_free_dma()
1164 */
1165 kfree(dsd_ptr);
1166 return 1;
1167 }
1168
1169 if (sp) {
1170 list_add_tail(&dsd_ptr->list,
1171 &((struct crc_context *)
1172 sp->u.scmd.ctx)->dsd_list);
1173
1174 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1175 } else {
1176 list_add_tail(&dsd_ptr->list,
1177 &(tc->ctx->dsd_list));
1178 tc->ctx_dsd_alloced = 1;
1179 }
1180
1181 /* add new list to cmd iocb or last list */
1182 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1183 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1184 *cur_dsd++ = dsd_list_len;
1185 cur_dsd = (uint32_t *)next_dsd;
1186 }
1187 sle_dma = sg_dma_address(sg);
1188
1189 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1190 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1191 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1192
1193 avail_dsds--;
1194 }
1195 /* Null termination */
1196 *cur_dsd++ = 0;
1197 *cur_dsd++ = 0;
1198 *cur_dsd++ = 0;
1199 return 0;
1200 }
1201
1202 /**
1203 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command
1204 * Type 6 IOCB types.
1205 *
1206 * @sp: SRB command to process
1207 * @cmd_pkt: Command type 3 IOCB
1208 * @tot_dsds: Total number of segments to transfer
1209 */
1210 static inline int
1211 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
1212 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts)
1213 {
1214 uint32_t *cur_dsd, *fcp_dl;
1215 scsi_qla_host_t *vha;
1216 struct scsi_cmnd *cmd;
1217 uint32_t total_bytes = 0;
1218 uint32_t data_bytes;
1219 uint32_t dif_bytes;
1220 uint8_t bundling = 1;
1221 uint16_t blk_size;
1222 uint8_t *clr_ptr;
1223 struct crc_context *crc_ctx_pkt = NULL;
1224 struct qla_hw_data *ha;
1225 uint8_t additional_fcpcdb_len;
1226 uint16_t fcp_cmnd_len;
1227 struct fcp_cmnd *fcp_cmnd;
1228 dma_addr_t crc_ctx_dma;
1229
1230 cmd = GET_CMD_SP(sp);
1231
1232 /* Update entry type to indicate Command Type CRC_2 IOCB */
1233 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_CRC_2);
1234
1235 vha = sp->fcport->vha;
1236 ha = vha->hw;
1237
1238 /* No data transfer */
1239 data_bytes = scsi_bufflen(cmd);
1240 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1241 cmd_pkt->byte_count = cpu_to_le32(0);
1242 return QLA_SUCCESS;
1243 }
1244
1245 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
1246
1247 /* Set transfer direction */
1248 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
1249 cmd_pkt->control_flags =
1250 cpu_to_le16(CF_WRITE_DATA);
1251 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
1252 cmd_pkt->control_flags =
1253 cpu_to_le16(CF_READ_DATA);
1254 }
1255
1256 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1257 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) ||
1258 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) ||
1259 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT))
1260 bundling = 0;
1261
1262 /* Allocate CRC context from global pool */
1263 crc_ctx_pkt = sp->u.scmd.ctx =
1264 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
1265
1266 if (!crc_ctx_pkt)
1267 goto crc_queuing_error;
1268
1269 /* Zero out CTX area. */
1270 clr_ptr = (uint8_t *)crc_ctx_pkt;
1271 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
1272
1273 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
1274
1275 sp->flags |= SRB_CRC_CTX_DMA_VALID;
1276
1277 /* Set handle */
1278 crc_ctx_pkt->handle = cmd_pkt->handle;
1279
1280 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
1281
1282 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *)
1283 &crc_ctx_pkt->ref_tag, tot_prot_dsds);
1284
1285 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
1286 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
1287 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
1288
1289 /* Determine SCSI command length -- align to 4 byte boundary */
1290 if (cmd->cmd_len > 16) {
1291 additional_fcpcdb_len = cmd->cmd_len - 16;
1292 if ((cmd->cmd_len % 4) != 0) {
1293 /* SCSI cmd > 16 bytes must be multiple of 4 */
1294 goto crc_queuing_error;
1295 }
1296 fcp_cmnd_len = 12 + cmd->cmd_len + 4;
1297 } else {
1298 additional_fcpcdb_len = 0;
1299 fcp_cmnd_len = 12 + 16 + 4;
1300 }
1301
1302 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd;
1303
1304 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len;
1305 if (cmd->sc_data_direction == DMA_TO_DEVICE)
1306 fcp_cmnd->additional_cdb_len |= 1;
1307 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
1308 fcp_cmnd->additional_cdb_len |= 2;
1309
1310 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun);
1311 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
1312 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len);
1313 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32(
1314 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1315 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
1316 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1317 fcp_cmnd->task_management = 0;
1318 fcp_cmnd->task_attribute = TSK_SIMPLE;
1319
1320 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
1321
1322 /* Compute dif len and adjust data len to incude protection */
1323 dif_bytes = 0;
1324 blk_size = cmd->device->sector_size;
1325 dif_bytes = (data_bytes / blk_size) * 8;
1326
1327 switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
1328 case SCSI_PROT_READ_INSERT:
1329 case SCSI_PROT_WRITE_STRIP:
1330 total_bytes = data_bytes;
1331 data_bytes += dif_bytes;
1332 break;
1333
1334 case SCSI_PROT_READ_STRIP:
1335 case SCSI_PROT_WRITE_INSERT:
1336 case SCSI_PROT_READ_PASS:
1337 case SCSI_PROT_WRITE_PASS:
1338 total_bytes = data_bytes + dif_bytes;
1339 break;
1340 default:
1341 BUG();
1342 }
1343
1344 if (!qla2x00_hba_err_chk_enabled(sp))
1345 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
1346 /* HBA error checking enabled */
1347 else if (IS_PI_UNINIT_CAPABLE(ha)) {
1348 if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1)
1349 || (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1350 SCSI_PROT_DIF_TYPE2))
1351 fw_prot_opts |= BIT_10;
1352 else if (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1353 SCSI_PROT_DIF_TYPE3)
1354 fw_prot_opts |= BIT_11;
1355 }
1356
1357 if (!bundling) {
1358 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
1359 } else {
1360 /*
1361 * Configure Bundling if we need to fetch interlaving
1362 * protection PCI accesses
1363 */
1364 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
1365 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
1366 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds -
1367 tot_prot_dsds);
1368 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
1369 }
1370
1371 /* Finish the common fields of CRC pkt */
1372 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size);
1373 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
1374 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
1375 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
1376 /* Fibre channel byte count */
1377 cmd_pkt->byte_count = cpu_to_le32(total_bytes);
1378 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 +
1379 additional_fcpcdb_len);
1380 *fcp_dl = htonl(total_bytes);
1381
1382 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1383 cmd_pkt->byte_count = cpu_to_le32(0);
1384 return QLA_SUCCESS;
1385 }
1386 /* Walks data segments */
1387
1388 cmd_pkt->control_flags |= cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
1389
1390 if (!bundling && tot_prot_dsds) {
1391 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp,
1392 cur_dsd, tot_dsds, NULL))
1393 goto crc_queuing_error;
1394 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd,
1395 (tot_dsds - tot_prot_dsds), NULL))
1396 goto crc_queuing_error;
1397
1398 if (bundling && tot_prot_dsds) {
1399 /* Walks dif segments */
1400 cmd_pkt->control_flags |= cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE);
1401 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
1402 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd,
1403 tot_prot_dsds, NULL))
1404 goto crc_queuing_error;
1405 }
1406 return QLA_SUCCESS;
1407
1408 crc_queuing_error:
1409 /* Cleanup will be performed by the caller */
1410
1411 return QLA_FUNCTION_FAILED;
1412 }
1413
1414 /**
1415 * qla24xx_start_scsi() - Send a SCSI command to the ISP
1416 * @sp: command to send to the ISP
1417 *
1418 * Returns non-zero if a failure occurred, else zero.
1419 */
1420 int
1421 qla24xx_start_scsi(srb_t *sp)
1422 {
1423 int nseg;
1424 unsigned long flags;
1425 uint32_t *clr_ptr;
1426 uint32_t index;
1427 uint32_t handle;
1428 struct cmd_type_7 *cmd_pkt;
1429 uint16_t cnt;
1430 uint16_t req_cnt;
1431 uint16_t tot_dsds;
1432 struct req_que *req = NULL;
1433 struct rsp_que *rsp = NULL;
1434 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1435 struct scsi_qla_host *vha = sp->fcport->vha;
1436 struct qla_hw_data *ha = vha->hw;
1437
1438 /* Setup device pointers. */
1439 qla25xx_set_que(sp, &rsp);
1440 req = vha->req;
1441
1442 /* So we know we haven't pci_map'ed anything yet */
1443 tot_dsds = 0;
1444
1445 /* Send marker if required */
1446 if (vha->marker_needed != 0) {
1447 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1448 QLA_SUCCESS)
1449 return QLA_FUNCTION_FAILED;
1450 vha->marker_needed = 0;
1451 }
1452
1453 /* Acquire ring specific lock */
1454 spin_lock_irqsave(&ha->hardware_lock, flags);
1455
1456 /* Check for room in outstanding command list. */
1457 handle = req->current_outstanding_cmd;
1458 for (index = 1; index < req->num_outstanding_cmds; index++) {
1459 handle++;
1460 if (handle == req->num_outstanding_cmds)
1461 handle = 1;
1462 if (!req->outstanding_cmds[handle])
1463 break;
1464 }
1465 if (index == req->num_outstanding_cmds)
1466 goto queuing_error;
1467
1468 /* Map the sg table so we have an accurate count of sg entries needed */
1469 if (scsi_sg_count(cmd)) {
1470 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1471 scsi_sg_count(cmd), cmd->sc_data_direction);
1472 if (unlikely(!nseg))
1473 goto queuing_error;
1474 } else
1475 nseg = 0;
1476
1477 tot_dsds = nseg;
1478 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
1479 if (req->cnt < (req_cnt + 2)) {
1480 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1481 RD_REG_DWORD_RELAXED(req->req_q_out);
1482 if (req->ring_index < cnt)
1483 req->cnt = cnt - req->ring_index;
1484 else
1485 req->cnt = req->length -
1486 (req->ring_index - cnt);
1487 if (req->cnt < (req_cnt + 2))
1488 goto queuing_error;
1489 }
1490
1491 /* Build command packet. */
1492 req->current_outstanding_cmd = handle;
1493 req->outstanding_cmds[handle] = sp;
1494 sp->handle = handle;
1495 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1496 req->cnt -= req_cnt;
1497
1498 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
1499 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1500
1501 /* Zero out remaining portion of packet. */
1502 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
1503 clr_ptr = (uint32_t *)cmd_pkt + 2;
1504 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1505 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1506
1507 /* Set NPORT-ID and LUN number*/
1508 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1509 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1510 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1511 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1512 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
1513
1514 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1515 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1516
1517 cmd_pkt->task = TSK_SIMPLE;
1518
1519 /* Load SCSI command packet. */
1520 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
1521 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
1522
1523 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
1524
1525 /* Build IOCB segments */
1526 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
1527
1528 /* Set total data segment count. */
1529 cmd_pkt->entry_count = (uint8_t)req_cnt;
1530 /* Specify response queue number where completion should happen */
1531 cmd_pkt->entry_status = (uint8_t) rsp->id;
1532 wmb();
1533 /* Adjust ring index. */
1534 req->ring_index++;
1535 if (req->ring_index == req->length) {
1536 req->ring_index = 0;
1537 req->ring_ptr = req->ring;
1538 } else
1539 req->ring_ptr++;
1540
1541 sp->flags |= SRB_DMA_VALID;
1542
1543 /* Set chip new ring index. */
1544 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1545 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1546
1547 /* Manage unprocessed RIO/ZIO commands in response queue. */
1548 if (vha->flags.process_response_queue &&
1549 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1550 qla24xx_process_response_queue(vha, rsp);
1551
1552 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1553 return QLA_SUCCESS;
1554
1555 queuing_error:
1556 if (tot_dsds)
1557 scsi_dma_unmap(cmd);
1558
1559 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1560
1561 return QLA_FUNCTION_FAILED;
1562 }
1563
1564 /**
1565 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP
1566 * @sp: command to send to the ISP
1567 *
1568 * Returns non-zero if a failure occurred, else zero.
1569 */
1570 int
1571 qla24xx_dif_start_scsi(srb_t *sp)
1572 {
1573 int nseg;
1574 unsigned long flags;
1575 uint32_t *clr_ptr;
1576 uint32_t index;
1577 uint32_t handle;
1578 uint16_t cnt;
1579 uint16_t req_cnt = 0;
1580 uint16_t tot_dsds;
1581 uint16_t tot_prot_dsds;
1582 uint16_t fw_prot_opts = 0;
1583 struct req_que *req = NULL;
1584 struct rsp_que *rsp = NULL;
1585 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1586 struct scsi_qla_host *vha = sp->fcport->vha;
1587 struct qla_hw_data *ha = vha->hw;
1588 struct cmd_type_crc_2 *cmd_pkt;
1589 uint32_t status = 0;
1590
1591 #define QDSS_GOT_Q_SPACE BIT_0
1592
1593 /* Only process protection or >16 cdb in this routine */
1594 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
1595 if (cmd->cmd_len <= 16)
1596 return qla24xx_start_scsi(sp);
1597 }
1598
1599 /* Setup device pointers. */
1600
1601 qla25xx_set_que(sp, &rsp);
1602 req = vha->req;
1603
1604 /* So we know we haven't pci_map'ed anything yet */
1605 tot_dsds = 0;
1606
1607 /* Send marker if required */
1608 if (vha->marker_needed != 0) {
1609 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1610 QLA_SUCCESS)
1611 return QLA_FUNCTION_FAILED;
1612 vha->marker_needed = 0;
1613 }
1614
1615 /* Acquire ring specific lock */
1616 spin_lock_irqsave(&ha->hardware_lock, flags);
1617
1618 /* Check for room in outstanding command list. */
1619 handle = req->current_outstanding_cmd;
1620 for (index = 1; index < req->num_outstanding_cmds; index++) {
1621 handle++;
1622 if (handle == req->num_outstanding_cmds)
1623 handle = 1;
1624 if (!req->outstanding_cmds[handle])
1625 break;
1626 }
1627
1628 if (index == req->num_outstanding_cmds)
1629 goto queuing_error;
1630
1631 /* Compute number of required data segments */
1632 /* Map the sg table so we have an accurate count of sg entries needed */
1633 if (scsi_sg_count(cmd)) {
1634 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1635 scsi_sg_count(cmd), cmd->sc_data_direction);
1636 if (unlikely(!nseg))
1637 goto queuing_error;
1638 else
1639 sp->flags |= SRB_DMA_VALID;
1640
1641 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1642 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1643 struct qla2_sgx sgx;
1644 uint32_t partial;
1645
1646 memset(&sgx, 0, sizeof(struct qla2_sgx));
1647 sgx.tot_bytes = scsi_bufflen(cmd);
1648 sgx.cur_sg = scsi_sglist(cmd);
1649 sgx.sp = sp;
1650
1651 nseg = 0;
1652 while (qla24xx_get_one_block_sg(
1653 cmd->device->sector_size, &sgx, &partial))
1654 nseg++;
1655 }
1656 } else
1657 nseg = 0;
1658
1659 /* number of required data segments */
1660 tot_dsds = nseg;
1661
1662 /* Compute number of required protection segments */
1663 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
1664 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
1665 scsi_prot_sg_count(cmd), cmd->sc_data_direction);
1666 if (unlikely(!nseg))
1667 goto queuing_error;
1668 else
1669 sp->flags |= SRB_CRC_PROT_DMA_VALID;
1670
1671 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1672 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1673 nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
1674 }
1675 } else {
1676 nseg = 0;
1677 }
1678
1679 req_cnt = 1;
1680 /* Total Data and protection sg segment(s) */
1681 tot_prot_dsds = nseg;
1682 tot_dsds += nseg;
1683 if (req->cnt < (req_cnt + 2)) {
1684 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1685 RD_REG_DWORD_RELAXED(req->req_q_out);
1686 if (req->ring_index < cnt)
1687 req->cnt = cnt - req->ring_index;
1688 else
1689 req->cnt = req->length -
1690 (req->ring_index - cnt);
1691 if (req->cnt < (req_cnt + 2))
1692 goto queuing_error;
1693 }
1694
1695 status |= QDSS_GOT_Q_SPACE;
1696
1697 /* Build header part of command packet (excluding the OPCODE). */
1698 req->current_outstanding_cmd = handle;
1699 req->outstanding_cmds[handle] = sp;
1700 sp->handle = handle;
1701 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1702 req->cnt -= req_cnt;
1703
1704 /* Fill-in common area */
1705 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
1706 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1707
1708 clr_ptr = (uint32_t *)cmd_pkt + 2;
1709 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1710
1711 /* Set NPORT-ID and LUN number*/
1712 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1713 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1714 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1715 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1716
1717 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1718 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1719
1720 /* Total Data and protection segment(s) */
1721 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1722
1723 /* Build IOCB segments and adjust for data protection segments */
1724 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
1725 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
1726 QLA_SUCCESS)
1727 goto queuing_error;
1728
1729 cmd_pkt->entry_count = (uint8_t)req_cnt;
1730 /* Specify response queue number where completion should happen */
1731 cmd_pkt->entry_status = (uint8_t) rsp->id;
1732 cmd_pkt->timeout = cpu_to_le16(0);
1733 wmb();
1734
1735 /* Adjust ring index. */
1736 req->ring_index++;
1737 if (req->ring_index == req->length) {
1738 req->ring_index = 0;
1739 req->ring_ptr = req->ring;
1740 } else
1741 req->ring_ptr++;
1742
1743 /* Set chip new ring index. */
1744 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1745 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1746
1747 /* Manage unprocessed RIO/ZIO commands in response queue. */
1748 if (vha->flags.process_response_queue &&
1749 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1750 qla24xx_process_response_queue(vha, rsp);
1751
1752 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1753
1754 return QLA_SUCCESS;
1755
1756 queuing_error:
1757 if (status & QDSS_GOT_Q_SPACE) {
1758 req->outstanding_cmds[handle] = NULL;
1759 req->cnt += req_cnt;
1760 }
1761 /* Cleanup will be performed by the caller (queuecommand) */
1762
1763 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1764 return QLA_FUNCTION_FAILED;
1765 }
1766
1767
1768 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp)
1769 {
1770 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1771 struct qla_hw_data *ha = sp->fcport->vha->hw;
1772 int affinity = cmd->request->cpu;
1773
1774 if (ha->flags.cpu_affinity_enabled && affinity >= 0 &&
1775 affinity < ha->max_rsp_queues - 1)
1776 *rsp = ha->rsp_q_map[affinity + 1];
1777 else
1778 *rsp = ha->rsp_q_map[0];
1779 }
1780
1781 /* Generic Control-SRB manipulation functions. */
1782
1783 /* hardware_lock assumed to be held. */
1784 void *
1785 qla2x00_alloc_iocbs_ready(scsi_qla_host_t *vha, srb_t *sp)
1786 {
1787 if (qla2x00_reset_active(vha))
1788 return NULL;
1789
1790 return qla2x00_alloc_iocbs(vha, sp);
1791 }
1792
1793 void *
1794 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
1795 {
1796 struct qla_hw_data *ha = vha->hw;
1797 struct req_que *req = ha->req_q_map[0];
1798 device_reg_t *reg = ISP_QUE_REG(ha, req->id);
1799 uint32_t index, handle;
1800 request_t *pkt;
1801 uint16_t cnt, req_cnt;
1802
1803 pkt = NULL;
1804 req_cnt = 1;
1805 handle = 0;
1806
1807 if (!sp)
1808 goto skip_cmd_array;
1809
1810 /* Check for room in outstanding command list. */
1811 handle = req->current_outstanding_cmd;
1812 for (index = 1; index < req->num_outstanding_cmds; index++) {
1813 handle++;
1814 if (handle == req->num_outstanding_cmds)
1815 handle = 1;
1816 if (!req->outstanding_cmds[handle])
1817 break;
1818 }
1819 if (index == req->num_outstanding_cmds) {
1820 ql_log(ql_log_warn, vha, 0x700b,
1821 "No room on outstanding cmd array.\n");
1822 goto queuing_error;
1823 }
1824
1825 /* Prep command array. */
1826 req->current_outstanding_cmd = handle;
1827 req->outstanding_cmds[handle] = sp;
1828 sp->handle = handle;
1829
1830 /* Adjust entry-counts as needed. */
1831 if (sp->type != SRB_SCSI_CMD)
1832 req_cnt = sp->iocbs;
1833
1834 skip_cmd_array:
1835 /* Check for room on request queue. */
1836 if (req->cnt < req_cnt + 2) {
1837 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha))
1838 cnt = RD_REG_DWORD(&reg->isp25mq.req_q_out);
1839 else if (IS_P3P_TYPE(ha))
1840 cnt = RD_REG_DWORD(&reg->isp82.req_q_out);
1841 else if (IS_FWI2_CAPABLE(ha))
1842 cnt = RD_REG_DWORD(&reg->isp24.req_q_out);
1843 else if (IS_QLAFX00(ha))
1844 cnt = RD_REG_DWORD(&reg->ispfx00.req_q_out);
1845 else
1846 cnt = qla2x00_debounce_register(
1847 ISP_REQ_Q_OUT(ha, &reg->isp));
1848
1849 if (req->ring_index < cnt)
1850 req->cnt = cnt - req->ring_index;
1851 else
1852 req->cnt = req->length -
1853 (req->ring_index - cnt);
1854 }
1855 if (req->cnt < req_cnt + 2)
1856 goto queuing_error;
1857
1858 /* Prep packet */
1859 req->cnt -= req_cnt;
1860 pkt = req->ring_ptr;
1861 memset(pkt, 0, REQUEST_ENTRY_SIZE);
1862 if (IS_QLAFX00(ha)) {
1863 WRT_REG_BYTE((void __iomem *)&pkt->entry_count, req_cnt);
1864 WRT_REG_WORD((void __iomem *)&pkt->handle, handle);
1865 } else {
1866 pkt->entry_count = req_cnt;
1867 pkt->handle = handle;
1868 }
1869
1870 queuing_error:
1871 return pkt;
1872 }
1873
1874 static void
1875 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1876 {
1877 struct srb_iocb *lio = &sp->u.iocb_cmd;
1878
1879 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1880 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
1881 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
1882 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
1883 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
1884 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
1885 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1886 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1887 logio->port_id[1] = sp->fcport->d_id.b.area;
1888 logio->port_id[2] = sp->fcport->d_id.b.domain;
1889 logio->vp_index = sp->fcport->vha->vp_idx;
1890 }
1891
1892 static void
1893 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
1894 {
1895 struct qla_hw_data *ha = sp->fcport->vha->hw;
1896 struct srb_iocb *lio = &sp->u.iocb_cmd;
1897 uint16_t opts;
1898
1899 mbx->entry_type = MBX_IOCB_TYPE;
1900 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1901 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
1902 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0;
1903 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0;
1904 if (HAS_EXTENDED_IDS(ha)) {
1905 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1906 mbx->mb10 = cpu_to_le16(opts);
1907 } else {
1908 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
1909 }
1910 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1911 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1912 sp->fcport->d_id.b.al_pa);
1913 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
1914 }
1915
1916 static void
1917 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1918 {
1919 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1920 logio->control_flags =
1921 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
1922 if (!sp->fcport->tgt_session ||
1923 !sp->fcport->tgt_session->keep_nport_handle)
1924 logio->control_flags |= cpu_to_le16(LCF_FREE_NPORT);
1925 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1926 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1927 logio->port_id[1] = sp->fcport->d_id.b.area;
1928 logio->port_id[2] = sp->fcport->d_id.b.domain;
1929 logio->vp_index = sp->fcport->vha->vp_idx;
1930 }
1931
1932 static void
1933 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
1934 {
1935 struct qla_hw_data *ha = sp->fcport->vha->hw;
1936
1937 mbx->entry_type = MBX_IOCB_TYPE;
1938 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1939 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
1940 mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
1941 cpu_to_le16(sp->fcport->loop_id):
1942 cpu_to_le16(sp->fcport->loop_id << 8);
1943 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1944 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1945 sp->fcport->d_id.b.al_pa);
1946 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
1947 /* Implicit: mbx->mbx10 = 0. */
1948 }
1949
1950 static void
1951 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1952 {
1953 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1954 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC);
1955 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1956 logio->vp_index = sp->fcport->vha->vp_idx;
1957 }
1958
1959 static void
1960 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx)
1961 {
1962 struct qla_hw_data *ha = sp->fcport->vha->hw;
1963
1964 mbx->entry_type = MBX_IOCB_TYPE;
1965 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1966 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE);
1967 if (HAS_EXTENDED_IDS(ha)) {
1968 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1969 mbx->mb10 = cpu_to_le16(BIT_0);
1970 } else {
1971 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0);
1972 }
1973 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma));
1974 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma));
1975 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma)));
1976 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma)));
1977 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
1978 }
1979
1980 static void
1981 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk)
1982 {
1983 uint32_t flags;
1984 uint64_t lun;
1985 struct fc_port *fcport = sp->fcport;
1986 scsi_qla_host_t *vha = fcport->vha;
1987 struct qla_hw_data *ha = vha->hw;
1988 struct srb_iocb *iocb = &sp->u.iocb_cmd;
1989 struct req_que *req = vha->req;
1990
1991 flags = iocb->u.tmf.flags;
1992 lun = iocb->u.tmf.lun;
1993
1994 tsk->entry_type = TSK_MGMT_IOCB_TYPE;
1995 tsk->entry_count = 1;
1996 tsk->handle = MAKE_HANDLE(req->id, tsk->handle);
1997 tsk->nport_handle = cpu_to_le16(fcport->loop_id);
1998 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
1999 tsk->control_flags = cpu_to_le32(flags);
2000 tsk->port_id[0] = fcport->d_id.b.al_pa;
2001 tsk->port_id[1] = fcport->d_id.b.area;
2002 tsk->port_id[2] = fcport->d_id.b.domain;
2003 tsk->vp_index = fcport->vha->vp_idx;
2004
2005 if (flags == TCF_LUN_RESET) {
2006 int_to_scsilun(lun, &tsk->lun);
2007 host_to_fcp_swap((uint8_t *)&tsk->lun,
2008 sizeof(tsk->lun));
2009 }
2010 }
2011
2012 static void
2013 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
2014 {
2015 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2016
2017 els_iocb->entry_type = ELS_IOCB_TYPE;
2018 els_iocb->entry_count = 1;
2019 els_iocb->sys_define = 0;
2020 els_iocb->entry_status = 0;
2021 els_iocb->handle = sp->handle;
2022 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2023 els_iocb->tx_dsd_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
2024 els_iocb->vp_index = sp->fcport->vha->vp_idx;
2025 els_iocb->sof_type = EST_SOFI3;
2026 els_iocb->rx_dsd_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2027
2028 els_iocb->opcode =
2029 sp->type == SRB_ELS_CMD_RPT ?
2030 bsg_job->request->rqst_data.r_els.els_code :
2031 bsg_job->request->rqst_data.h_els.command_code;
2032 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2033 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
2034 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2035 els_iocb->control_flags = 0;
2036 els_iocb->rx_byte_count =
2037 cpu_to_le32(bsg_job->reply_payload.payload_len);
2038 els_iocb->tx_byte_count =
2039 cpu_to_le32(bsg_job->request_payload.payload_len);
2040
2041 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address
2042 (bsg_job->request_payload.sg_list)));
2043 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address
2044 (bsg_job->request_payload.sg_list)));
2045 els_iocb->tx_len = cpu_to_le32(sg_dma_len
2046 (bsg_job->request_payload.sg_list));
2047
2048 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address
2049 (bsg_job->reply_payload.sg_list)));
2050 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address
2051 (bsg_job->reply_payload.sg_list)));
2052 els_iocb->rx_len = cpu_to_le32(sg_dma_len
2053 (bsg_job->reply_payload.sg_list));
2054
2055 sp->fcport->vha->qla_stats.control_requests++;
2056 }
2057
2058 static void
2059 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb)
2060 {
2061 uint16_t avail_dsds;
2062 uint32_t *cur_dsd;
2063 struct scatterlist *sg;
2064 int index;
2065 uint16_t tot_dsds;
2066 scsi_qla_host_t *vha = sp->fcport->vha;
2067 struct qla_hw_data *ha = vha->hw;
2068 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2069 int loop_iterartion = 0;
2070 int entry_count = 1;
2071
2072 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t));
2073 ct_iocb->entry_type = CT_IOCB_TYPE;
2074 ct_iocb->entry_status = 0;
2075 ct_iocb->handle1 = sp->handle;
2076 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id);
2077 ct_iocb->status = cpu_to_le16(0);
2078 ct_iocb->control_flags = cpu_to_le16(0);
2079 ct_iocb->timeout = 0;
2080 ct_iocb->cmd_dsd_count =
2081 cpu_to_le16(bsg_job->request_payload.sg_cnt);
2082 ct_iocb->total_dsd_count =
2083 cpu_to_le16(bsg_job->request_payload.sg_cnt + 1);
2084 ct_iocb->req_bytecount =
2085 cpu_to_le32(bsg_job->request_payload.payload_len);
2086 ct_iocb->rsp_bytecount =
2087 cpu_to_le32(bsg_job->reply_payload.payload_len);
2088
2089 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address
2090 (bsg_job->request_payload.sg_list)));
2091 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address
2092 (bsg_job->request_payload.sg_list)));
2093 ct_iocb->dseg_req_length = ct_iocb->req_bytecount;
2094
2095 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address
2096 (bsg_job->reply_payload.sg_list)));
2097 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address
2098 (bsg_job->reply_payload.sg_list)));
2099 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount;
2100
2101 avail_dsds = 1;
2102 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address;
2103 index = 0;
2104 tot_dsds = bsg_job->reply_payload.sg_cnt;
2105
2106 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2107 dma_addr_t sle_dma;
2108 cont_a64_entry_t *cont_pkt;
2109
2110 /* Allocate additional continuation packets? */
2111 if (avail_dsds == 0) {
2112 /*
2113 * Five DSDs are available in the Cont.
2114 * Type 1 IOCB.
2115 */
2116 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
2117 vha->hw->req_q_map[0]);
2118 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2119 avail_dsds = 5;
2120 entry_count++;
2121 }
2122
2123 sle_dma = sg_dma_address(sg);
2124 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2125 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2126 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2127 loop_iterartion++;
2128 avail_dsds--;
2129 }
2130 ct_iocb->entry_count = entry_count;
2131
2132 sp->fcport->vha->qla_stats.control_requests++;
2133 }
2134
2135 static void
2136 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
2137 {
2138 uint16_t avail_dsds;
2139 uint32_t *cur_dsd;
2140 struct scatterlist *sg;
2141 int index;
2142 uint16_t tot_dsds;
2143 scsi_qla_host_t *vha = sp->fcport->vha;
2144 struct qla_hw_data *ha = vha->hw;
2145 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2146 int loop_iterartion = 0;
2147 int entry_count = 1;
2148
2149 ct_iocb->entry_type = CT_IOCB_TYPE;
2150 ct_iocb->entry_status = 0;
2151 ct_iocb->sys_define = 0;
2152 ct_iocb->handle = sp->handle;
2153
2154 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2155 ct_iocb->vp_index = sp->fcport->vha->vp_idx;
2156 ct_iocb->comp_status = cpu_to_le16(0);
2157
2158 ct_iocb->cmd_dsd_count =
2159 cpu_to_le16(bsg_job->request_payload.sg_cnt);
2160 ct_iocb->timeout = 0;
2161 ct_iocb->rsp_dsd_count =
2162 cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2163 ct_iocb->rsp_byte_count =
2164 cpu_to_le32(bsg_job->reply_payload.payload_len);
2165 ct_iocb->cmd_byte_count =
2166 cpu_to_le32(bsg_job->request_payload.payload_len);
2167 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address
2168 (bsg_job->request_payload.sg_list)));
2169 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address
2170 (bsg_job->request_payload.sg_list)));
2171 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len
2172 (bsg_job->request_payload.sg_list));
2173
2174 avail_dsds = 1;
2175 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address;
2176 index = 0;
2177 tot_dsds = bsg_job->reply_payload.sg_cnt;
2178
2179 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2180 dma_addr_t sle_dma;
2181 cont_a64_entry_t *cont_pkt;
2182
2183 /* Allocate additional continuation packets? */
2184 if (avail_dsds == 0) {
2185 /*
2186 * Five DSDs are available in the Cont.
2187 * Type 1 IOCB.
2188 */
2189 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
2190 ha->req_q_map[0]);
2191 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2192 avail_dsds = 5;
2193 entry_count++;
2194 }
2195
2196 sle_dma = sg_dma_address(sg);
2197 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2198 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2199 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2200 loop_iterartion++;
2201 avail_dsds--;
2202 }
2203 ct_iocb->entry_count = entry_count;
2204 }
2205
2206 /*
2207 * qla82xx_start_scsi() - Send a SCSI command to the ISP
2208 * @sp: command to send to the ISP
2209 *
2210 * Returns non-zero if a failure occurred, else zero.
2211 */
2212 int
2213 qla82xx_start_scsi(srb_t *sp)
2214 {
2215 int nseg;
2216 unsigned long flags;
2217 struct scsi_cmnd *cmd;
2218 uint32_t *clr_ptr;
2219 uint32_t index;
2220 uint32_t handle;
2221 uint16_t cnt;
2222 uint16_t req_cnt;
2223 uint16_t tot_dsds;
2224 struct device_reg_82xx __iomem *reg;
2225 uint32_t dbval;
2226 uint32_t *fcp_dl;
2227 uint8_t additional_cdb_len;
2228 struct ct6_dsd *ctx;
2229 struct scsi_qla_host *vha = sp->fcport->vha;
2230 struct qla_hw_data *ha = vha->hw;
2231 struct req_que *req = NULL;
2232 struct rsp_que *rsp = NULL;
2233
2234 /* Setup device pointers. */
2235 reg = &ha->iobase->isp82;
2236 cmd = GET_CMD_SP(sp);
2237 req = vha->req;
2238 rsp = ha->rsp_q_map[0];
2239
2240 /* So we know we haven't pci_map'ed anything yet */
2241 tot_dsds = 0;
2242
2243 dbval = 0x04 | (ha->portnum << 5);
2244
2245 /* Send marker if required */
2246 if (vha->marker_needed != 0) {
2247 if (qla2x00_marker(vha, req,
2248 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) {
2249 ql_log(ql_log_warn, vha, 0x300c,
2250 "qla2x00_marker failed for cmd=%p.\n", cmd);
2251 return QLA_FUNCTION_FAILED;
2252 }
2253 vha->marker_needed = 0;
2254 }
2255
2256 /* Acquire ring specific lock */
2257 spin_lock_irqsave(&ha->hardware_lock, flags);
2258
2259 /* Check for room in outstanding command list. */
2260 handle = req->current_outstanding_cmd;
2261 for (index = 1; index < req->num_outstanding_cmds; index++) {
2262 handle++;
2263 if (handle == req->num_outstanding_cmds)
2264 handle = 1;
2265 if (!req->outstanding_cmds[handle])
2266 break;
2267 }
2268 if (index == req->num_outstanding_cmds)
2269 goto queuing_error;
2270
2271 /* Map the sg table so we have an accurate count of sg entries needed */
2272 if (scsi_sg_count(cmd)) {
2273 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
2274 scsi_sg_count(cmd), cmd->sc_data_direction);
2275 if (unlikely(!nseg))
2276 goto queuing_error;
2277 } else
2278 nseg = 0;
2279
2280 tot_dsds = nseg;
2281
2282 if (tot_dsds > ql2xshiftctondsd) {
2283 struct cmd_type_6 *cmd_pkt;
2284 uint16_t more_dsd_lists = 0;
2285 struct dsd_dma *dsd_ptr;
2286 uint16_t i;
2287
2288 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds);
2289 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) {
2290 ql_dbg(ql_dbg_io, vha, 0x300d,
2291 "Num of DSD list %d is than %d for cmd=%p.\n",
2292 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN,
2293 cmd);
2294 goto queuing_error;
2295 }
2296
2297 if (more_dsd_lists <= ha->gbl_dsd_avail)
2298 goto sufficient_dsds;
2299 else
2300 more_dsd_lists -= ha->gbl_dsd_avail;
2301
2302 for (i = 0; i < more_dsd_lists; i++) {
2303 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
2304 if (!dsd_ptr) {
2305 ql_log(ql_log_fatal, vha, 0x300e,
2306 "Failed to allocate memory for dsd_dma "
2307 "for cmd=%p.\n", cmd);
2308 goto queuing_error;
2309 }
2310
2311 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool,
2312 GFP_ATOMIC, &dsd_ptr->dsd_list_dma);
2313 if (!dsd_ptr->dsd_addr) {
2314 kfree(dsd_ptr);
2315 ql_log(ql_log_fatal, vha, 0x300f,
2316 "Failed to allocate memory for dsd_addr "
2317 "for cmd=%p.\n", cmd);
2318 goto queuing_error;
2319 }
2320 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list);
2321 ha->gbl_dsd_avail++;
2322 }
2323
2324 sufficient_dsds:
2325 req_cnt = 1;
2326
2327 if (req->cnt < (req_cnt + 2)) {
2328 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
2329 &reg->req_q_out[0]);
2330 if (req->ring_index < cnt)
2331 req->cnt = cnt - req->ring_index;
2332 else
2333 req->cnt = req->length -
2334 (req->ring_index - cnt);
2335 if (req->cnt < (req_cnt + 2))
2336 goto queuing_error;
2337 }
2338
2339 ctx = sp->u.scmd.ctx =
2340 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC);
2341 if (!ctx) {
2342 ql_log(ql_log_fatal, vha, 0x3010,
2343 "Failed to allocate ctx for cmd=%p.\n", cmd);
2344 goto queuing_error;
2345 }
2346
2347 memset(ctx, 0, sizeof(struct ct6_dsd));
2348 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool,
2349 GFP_ATOMIC, &ctx->fcp_cmnd_dma);
2350 if (!ctx->fcp_cmnd) {
2351 ql_log(ql_log_fatal, vha, 0x3011,
2352 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd);
2353 goto queuing_error;
2354 }
2355
2356 /* Initialize the DSD list and dma handle */
2357 INIT_LIST_HEAD(&ctx->dsd_list);
2358 ctx->dsd_use_cnt = 0;
2359
2360 if (cmd->cmd_len > 16) {
2361 additional_cdb_len = cmd->cmd_len - 16;
2362 if ((cmd->cmd_len % 4) != 0) {
2363 /* SCSI command bigger than 16 bytes must be
2364 * multiple of 4
2365 */
2366 ql_log(ql_log_warn, vha, 0x3012,
2367 "scsi cmd len %d not multiple of 4 "
2368 "for cmd=%p.\n", cmd->cmd_len, cmd);
2369 goto queuing_error_fcp_cmnd;
2370 }
2371 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4;
2372 } else {
2373 additional_cdb_len = 0;
2374 ctx->fcp_cmnd_len = 12 + 16 + 4;
2375 }
2376
2377 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr;
2378 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2379
2380 /* Zero out remaining portion of packet. */
2381 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
2382 clr_ptr = (uint32_t *)cmd_pkt + 2;
2383 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2384 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2385
2386 /* Set NPORT-ID and LUN number*/
2387 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2388 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2389 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2390 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2391 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
2392
2393 /* Build IOCB segments */
2394 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds))
2395 goto queuing_error_fcp_cmnd;
2396
2397 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2398 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
2399
2400 /* build FCP_CMND IU */
2401 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd));
2402 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun);
2403 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len;
2404
2405 if (cmd->sc_data_direction == DMA_TO_DEVICE)
2406 ctx->fcp_cmnd->additional_cdb_len |= 1;
2407 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
2408 ctx->fcp_cmnd->additional_cdb_len |= 2;
2409
2410 /* Populate the FCP_PRIO. */
2411 if (ha->flags.fcp_prio_enabled)
2412 ctx->fcp_cmnd->task_attribute |=
2413 sp->fcport->fcp_prio << 3;
2414
2415 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
2416
2417 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 +
2418 additional_cdb_len);
2419 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd));
2420
2421 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len);
2422 cmd_pkt->fcp_cmnd_dseg_address[0] =
2423 cpu_to_le32(LSD(ctx->fcp_cmnd_dma));
2424 cmd_pkt->fcp_cmnd_dseg_address[1] =
2425 cpu_to_le32(MSD(ctx->fcp_cmnd_dma));
2426
2427 sp->flags |= SRB_FCP_CMND_DMA_VALID;
2428 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
2429 /* Set total data segment count. */
2430 cmd_pkt->entry_count = (uint8_t)req_cnt;
2431 /* Specify response queue number where
2432 * completion should happen
2433 */
2434 cmd_pkt->entry_status = (uint8_t) rsp->id;
2435 } else {
2436 struct cmd_type_7 *cmd_pkt;
2437 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
2438 if (req->cnt < (req_cnt + 2)) {
2439 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
2440 &reg->req_q_out[0]);
2441 if (req->ring_index < cnt)
2442 req->cnt = cnt - req->ring_index;
2443 else
2444 req->cnt = req->length -
2445 (req->ring_index - cnt);
2446 }
2447 if (req->cnt < (req_cnt + 2))
2448 goto queuing_error;
2449
2450 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
2451 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2452
2453 /* Zero out remaining portion of packet. */
2454 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
2455 clr_ptr = (uint32_t *)cmd_pkt + 2;
2456 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2457 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2458
2459 /* Set NPORT-ID and LUN number*/
2460 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2461 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2462 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2463 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2464 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
2465
2466 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2467 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun,
2468 sizeof(cmd_pkt->lun));
2469
2470 /* Populate the FCP_PRIO. */
2471 if (ha->flags.fcp_prio_enabled)
2472 cmd_pkt->task |= sp->fcport->fcp_prio << 3;
2473
2474 /* Load SCSI command packet. */
2475 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
2476 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
2477
2478 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
2479
2480 /* Build IOCB segments */
2481 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
2482
2483 /* Set total data segment count. */
2484 cmd_pkt->entry_count = (uint8_t)req_cnt;
2485 /* Specify response queue number where
2486 * completion should happen.
2487 */
2488 cmd_pkt->entry_status = (uint8_t) rsp->id;
2489
2490 }
2491 /* Build command packet. */
2492 req->current_outstanding_cmd = handle;
2493 req->outstanding_cmds[handle] = sp;
2494 sp->handle = handle;
2495 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
2496 req->cnt -= req_cnt;
2497 wmb();
2498
2499 /* Adjust ring index. */
2500 req->ring_index++;
2501 if (req->ring_index == req->length) {
2502 req->ring_index = 0;
2503 req->ring_ptr = req->ring;
2504 } else
2505 req->ring_ptr++;
2506
2507 sp->flags |= SRB_DMA_VALID;
2508
2509 /* Set chip new ring index. */
2510 /* write, read and verify logic */
2511 dbval = dbval | (req->id << 8) | (req->ring_index << 16);
2512 if (ql2xdbwr)
2513 qla82xx_wr_32(ha, (uintptr_t __force)ha->nxdb_wr_ptr, dbval);
2514 else {
2515 WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
2516 wmb();
2517 while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
2518 WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
2519 wmb();
2520 }
2521 }
2522
2523 /* Manage unprocessed RIO/ZIO commands in response queue. */
2524 if (vha->flags.process_response_queue &&
2525 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
2526 qla24xx_process_response_queue(vha, rsp);
2527
2528 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2529 return QLA_SUCCESS;
2530
2531 queuing_error_fcp_cmnd:
2532 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma);
2533 queuing_error:
2534 if (tot_dsds)
2535 scsi_dma_unmap(cmd);
2536
2537 if (sp->u.scmd.ctx) {
2538 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool);
2539 sp->u.scmd.ctx = NULL;
2540 }
2541 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2542
2543 return QLA_FUNCTION_FAILED;
2544 }
2545
2546 static void
2547 qla24xx_abort_iocb(srb_t *sp, struct abort_entry_24xx *abt_iocb)
2548 {
2549 struct srb_iocb *aio = &sp->u.iocb_cmd;
2550 scsi_qla_host_t *vha = sp->fcport->vha;
2551 struct req_que *req = vha->req;
2552
2553 memset(abt_iocb, 0, sizeof(struct abort_entry_24xx));
2554 abt_iocb->entry_type = ABORT_IOCB_TYPE;
2555 abt_iocb->entry_count = 1;
2556 abt_iocb->handle = cpu_to_le32(MAKE_HANDLE(req->id, sp->handle));
2557 abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2558 abt_iocb->handle_to_abort =
2559 cpu_to_le32(MAKE_HANDLE(req->id, aio->u.abt.cmd_hndl));
2560 abt_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2561 abt_iocb->port_id[1] = sp->fcport->d_id.b.area;
2562 abt_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2563 abt_iocb->vp_index = vha->vp_idx;
2564 abt_iocb->req_que_no = cpu_to_le16(req->id);
2565 /* Send the command to the firmware */
2566 wmb();
2567 }
2568
2569 int
2570 qla2x00_start_sp(srb_t *sp)
2571 {
2572 int rval;
2573 struct qla_hw_data *ha = sp->fcport->vha->hw;
2574 void *pkt;
2575 unsigned long flags;
2576
2577 rval = QLA_FUNCTION_FAILED;
2578 spin_lock_irqsave(&ha->hardware_lock, flags);
2579 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp);
2580 if (!pkt) {
2581 ql_log(ql_log_warn, sp->fcport->vha, 0x700c,
2582 "qla2x00_alloc_iocbs failed.\n");
2583 goto done;
2584 }
2585
2586 rval = QLA_SUCCESS;
2587 switch (sp->type) {
2588 case SRB_LOGIN_CMD:
2589 IS_FWI2_CAPABLE(ha) ?
2590 qla24xx_login_iocb(sp, pkt) :
2591 qla2x00_login_iocb(sp, pkt);
2592 break;
2593 case SRB_LOGOUT_CMD:
2594 IS_FWI2_CAPABLE(ha) ?
2595 qla24xx_logout_iocb(sp, pkt) :
2596 qla2x00_logout_iocb(sp, pkt);
2597 break;
2598 case SRB_ELS_CMD_RPT:
2599 case SRB_ELS_CMD_HST:
2600 qla24xx_els_iocb(sp, pkt);
2601 break;
2602 case SRB_CT_CMD:
2603 IS_FWI2_CAPABLE(ha) ?
2604 qla24xx_ct_iocb(sp, pkt) :
2605 qla2x00_ct_iocb(sp, pkt);
2606 break;
2607 case SRB_ADISC_CMD:
2608 IS_FWI2_CAPABLE(ha) ?
2609 qla24xx_adisc_iocb(sp, pkt) :
2610 qla2x00_adisc_iocb(sp, pkt);
2611 break;
2612 case SRB_TM_CMD:
2613 IS_QLAFX00(ha) ?
2614 qlafx00_tm_iocb(sp, pkt) :
2615 qla24xx_tm_iocb(sp, pkt);
2616 break;
2617 case SRB_FXIOCB_DCMD:
2618 case SRB_FXIOCB_BCMD:
2619 qlafx00_fxdisc_iocb(sp, pkt);
2620 break;
2621 case SRB_ABT_CMD:
2622 IS_QLAFX00(ha) ?
2623 qlafx00_abort_iocb(sp, pkt) :
2624 qla24xx_abort_iocb(sp, pkt);
2625 break;
2626 default:
2627 break;
2628 }
2629
2630 wmb();
2631 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]);
2632 done:
2633 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2634 return rval;
2635 }
2636
2637 static void
2638 qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha,
2639 struct cmd_bidir *cmd_pkt, uint32_t tot_dsds)
2640 {
2641 uint16_t avail_dsds;
2642 uint32_t *cur_dsd;
2643 uint32_t req_data_len = 0;
2644 uint32_t rsp_data_len = 0;
2645 struct scatterlist *sg;
2646 int index;
2647 int entry_count = 1;
2648 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2649
2650 /*Update entry type to indicate bidir command */
2651 *((uint32_t *)(&cmd_pkt->entry_type)) =
2652 cpu_to_le32(COMMAND_BIDIRECTIONAL);
2653
2654 /* Set the transfer direction, in this set both flags
2655 * Also set the BD_WRAP_BACK flag, firmware will take care
2656 * assigning DID=SID for outgoing pkts.
2657 */
2658 cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
2659 cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2660 cmd_pkt->control_flags = cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA |
2661 BD_WRAP_BACK);
2662
2663 req_data_len = rsp_data_len = bsg_job->request_payload.payload_len;
2664 cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len);
2665 cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len);
2666 cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2);
2667
2668 vha->bidi_stats.transfer_bytes += req_data_len;
2669 vha->bidi_stats.io_count++;
2670
2671 vha->qla_stats.output_bytes += req_data_len;
2672 vha->qla_stats.output_requests++;
2673
2674 /* Only one dsd is available for bidirectional IOCB, remaining dsds
2675 * are bundled in continuation iocb
2676 */
2677 avail_dsds = 1;
2678 cur_dsd = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
2679
2680 index = 0;
2681
2682 for_each_sg(bsg_job->request_payload.sg_list, sg,
2683 bsg_job->request_payload.sg_cnt, index) {
2684 dma_addr_t sle_dma;
2685 cont_a64_entry_t *cont_pkt;
2686
2687 /* Allocate additional continuation packets */
2688 if (avail_dsds == 0) {
2689 /* Continuation type 1 IOCB can accomodate
2690 * 5 DSDS
2691 */
2692 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
2693 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2694 avail_dsds = 5;
2695 entry_count++;
2696 }
2697 sle_dma = sg_dma_address(sg);
2698 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2699 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2700 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2701 avail_dsds--;
2702 }
2703 /* For read request DSD will always goes to continuation IOCB
2704 * and follow the write DSD. If there is room on the current IOCB
2705 * then it is added to that IOCB else new continuation IOCB is
2706 * allocated.
2707 */
2708 for_each_sg(bsg_job->reply_payload.sg_list, sg,
2709 bsg_job->reply_payload.sg_cnt, index) {
2710 dma_addr_t sle_dma;
2711 cont_a64_entry_t *cont_pkt;
2712
2713 /* Allocate additional continuation packets */
2714 if (avail_dsds == 0) {
2715 /* Continuation type 1 IOCB can accomodate
2716 * 5 DSDS
2717 */
2718 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
2719 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2720 avail_dsds = 5;
2721 entry_count++;
2722 }
2723 sle_dma = sg_dma_address(sg);
2724 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2725 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2726 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2727 avail_dsds--;
2728 }
2729 /* This value should be same as number of IOCB required for this cmd */
2730 cmd_pkt->entry_count = entry_count;
2731 }
2732
2733 int
2734 qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
2735 {
2736
2737 struct qla_hw_data *ha = vha->hw;
2738 unsigned long flags;
2739 uint32_t handle;
2740 uint32_t index;
2741 uint16_t req_cnt;
2742 uint16_t cnt;
2743 uint32_t *clr_ptr;
2744 struct cmd_bidir *cmd_pkt = NULL;
2745 struct rsp_que *rsp;
2746 struct req_que *req;
2747 int rval = EXT_STATUS_OK;
2748
2749 rval = QLA_SUCCESS;
2750
2751 rsp = ha->rsp_q_map[0];
2752 req = vha->req;
2753
2754 /* Send marker if required */
2755 if (vha->marker_needed != 0) {
2756 if (qla2x00_marker(vha, req,
2757 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS)
2758 return EXT_STATUS_MAILBOX;
2759 vha->marker_needed = 0;
2760 }
2761
2762 /* Acquire ring specific lock */
2763 spin_lock_irqsave(&ha->hardware_lock, flags);
2764
2765 /* Check for room in outstanding command list. */
2766 handle = req->current_outstanding_cmd;
2767 for (index = 1; index < req->num_outstanding_cmds; index++) {
2768 handle++;
2769 if (handle == req->num_outstanding_cmds)
2770 handle = 1;
2771 if (!req->outstanding_cmds[handle])
2772 break;
2773 }
2774
2775 if (index == req->num_outstanding_cmds) {
2776 rval = EXT_STATUS_BUSY;
2777 goto queuing_error;
2778 }
2779
2780 /* Calculate number of IOCB required */
2781 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
2782
2783 /* Check for room on request queue. */
2784 if (req->cnt < req_cnt + 2) {
2785 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
2786 RD_REG_DWORD_RELAXED(req->req_q_out);
2787 if (req->ring_index < cnt)
2788 req->cnt = cnt - req->ring_index;
2789 else
2790 req->cnt = req->length -
2791 (req->ring_index - cnt);
2792 }
2793 if (req->cnt < req_cnt + 2) {
2794 rval = EXT_STATUS_BUSY;
2795 goto queuing_error;
2796 }
2797
2798 cmd_pkt = (struct cmd_bidir *)req->ring_ptr;
2799 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2800
2801 /* Zero out remaining portion of packet. */
2802 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
2803 clr_ptr = (uint32_t *)cmd_pkt + 2;
2804 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2805
2806 /* Set NPORT-ID (of vha)*/
2807 cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id);
2808 cmd_pkt->port_id[0] = vha->d_id.b.al_pa;
2809 cmd_pkt->port_id[1] = vha->d_id.b.area;
2810 cmd_pkt->port_id[2] = vha->d_id.b.domain;
2811
2812 qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds);
2813 cmd_pkt->entry_status = (uint8_t) rsp->id;
2814 /* Build command packet. */
2815 req->current_outstanding_cmd = handle;
2816 req->outstanding_cmds[handle] = sp;
2817 sp->handle = handle;
2818 req->cnt -= req_cnt;
2819
2820 /* Send the command to the firmware */
2821 wmb();
2822 qla2x00_start_iocbs(vha, req);
2823 queuing_error:
2824 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2825 return rval;
2826 }
Linux with added FPC-III support